Biochemical assessment of remontant raspberry fruits grown in indoor and outdoor cultivated

Abstract

Technologies for the extended production of fresh berry products are of great importance for agriculture in the territories of extreme farming, which include the Baikal region. The emergence of domestic producers of fresh berries is actively pushing imported products out of the market. This study is aimed at developing a technology for obtaining early and late fresh berry products of remontant raspberries in the Baikal region with high nutritional qualities. The article introduces the researches carried out in the Department of Applied and Experimental Developments of the SIPPB SB RAS (Irkutsk). The objects of study are the fruits of varieties and forms of remontant raspberries of Russian selection: Rubinovoe Ozherel'ye, Orangevoe Chudo, Heracle, Zhar Ptitsa, 32-151-1, 37-15-4. In this work, the change in the accumulation of sugars, vitamins and organic acids depending on the growing conditions was studied. The fruits were harvested in favorable weather, in the phase of consumer ripeness at all sites simultaneously. The studies were carried out in the laboratory of toxicology and biochemistry at the Federal State Budgetary Institution "Irkutsk MVL". As a result of the study, it was found that citric acid in the fruits of remontant raspberry accumulates more in plants growing in open ground, and malic acid - in a greenhouse with a polycarbonate coating. In fruits grown in a film greenhouse, sugars accumulate less than in a polycarbonate greenhouse and open ground. The accumulation of vitamin C in fruits ripened in film and polycarbonate greenhouses is less than in open ground.